Replaces everything after the enacting clause. Amends the School Safety Drill Act. Provides that, no later than 90 days after the first day of each school year, schools must conduct at least one law enforcement drill that addresses an active threat or an active shooter within a school building. Requires all law enforcement drills to be conducted on days and times when students are normally present in the school building (rather than allowing the drill to be conducted on days and times when students are not present in the school building). Provides that the appropriate local law enforcement agency shall observe the administration of the drill. Makes changes concerning participation.

House Floor Amendment No. 1Allows administrators or school support personnel the discretion to exempt students from law enforcement drills.